Valve



July 27, 1937 c. J. FITZGERALD 2,088,509lv VALVE Filed June 29, 1936 ATTORNEY Patented July '27', l1931*-11 The invention relates to -disk retainers. and pilots for use with The primary object of the invention is the'provision of a structure of this character;` wherein fit is possible for the quick changeof vthe disk in 1 renewing disk valves which can be had throughl the instrumentality of a retainer which carries a disk and when a new disk is necessary the retainer is discarded with the disk and a new assembly thereof is applied thus "rendering the valve further serviceable.

Another object of the invention is the provision of a structure of this character, wherein a valve disk can be applied with dispatch and without the aid of tools in that the application of the valve can be had by hand as the retainer for the disk is of the snap-on type. c

A further object of the invention is the provision of a structure of this character, which is extremely simple in its make-up, thoroughly reliable and effective in its operation, assuring quick renewing of valve disks, and inexpensive to manufacture and install.

With these and other objects in View, the invention consists in the features of construction, combination and arrangement of parts as will be hereinafter more fully described, illustrated in the accompanying drawing, which discloses the preferred embodiment of the invention and pointed out in the claim hereunto appended.

In the accompanying drawing:

Figure 1 is a vertical sectional view through a device associated thereaccordance with the'intypical valve with the with and constructed in vention.

Figure 2 is a sectional view on the line 2-2 of Figure 1. Y Figure 3 is a topA plan view of the retainer for a valve disk. f

Figure 4 is an elevation partly in section 'of the pilot and retainer with Figure 5 is a sectional view on the line 5 5 vof Figure 4. Figure 6 is a perspective view of the pilot. Figure 7 is a perspectivel view of the valve disk retainer.

Figure 8 is an elevation partly in section of a modied form of valve stem showing the retainer applied with the pilot deleted.

Similar reference characters indicate corresponding parts throughout the several views in the drawing.

Referring to the drawing in detailfA desig- Y nates generally a portion of the .valve casing of the globe type and interiorly of this casingis the renewable disk. type valves.

A isiexteriorlyl threaded the valve disk in place.

- the valve is closed.V

-r --usual valve seat ill). Asis customary'the Valve casingis vformed with anannular neck II which l to engagejf-the .internally l -is externally threa'ded'on its upper end to receive 15v j. the internally'fthreaded lcap I4 engaging the usual y follower I5 `to compress the packing I6 between the interior of the neck of the bonnet andthe valve spindle or stem asL is usual in valvesof this 'I'he upper edge or rim of the neck I I is formed v with an inwardly and downwardly beveledsurf'ace fl I 1 adapted to be` engaged by a complementary shoulder I8 formed on the undcrfaoe of the bonnet I3.

surfaces is to provide an additionalseal between the bonnet andthetneck of the casing when the said bonnet .is screwed home. Y i i 'I'he spindle'or stem I9 is provided with'screw threads 20 which `engage the interior threads 2|l 20 in the bonnet, the lower inner end of; thefstembeing formed with a head 22 accessible through an open-sided slot 24 provided withina pilot 25. The pilot 25 is preferably of substantially square formation having beveled corners pilot will be guided and properlyv centered within the neck II Aofthe casing A. The valve -in its assembly is of the conventional type and is merely shown and described for the purpose of illustrating the application and use fully` set forth.` l i y The pilot 25 is readily attached to and removed from the head 22 ofthe spindle or stem I9 l.and 35 when attached and within the casing A 'there' is no liability oi separation of the pilot from the spindle or stem when the latter is operated for the opening and closing of the valve.

The pilot 2 5 at itsunderside is formed with an 40 manner the valve disk 30 is Areplaceably heldwith 45 kthe pilot 25 and such disk is adapted to be engaged with the seat I0 in the valve casing A when In Figure V8 ofthe 'drawing therel is shown a slight modication wherein the. stern or spindle 50 Y' 3l is formed lat itsfinner or lower end with a flared circularhead` 32 having. a peripheral annular channel or groove 33 so that the retainer ring 34 which is identical Ato The purpose of these coacting beveled Q15" 2s so that this" 25 of the valve disk 30 retainer and pilot constituting the present invention, the Yvalve disk retainer being hereinafter the ring 29T can be 55 'l 'Y 2 separably attached to this head 32 for the tting of the lvalve disk 375 therewith.

With reference to the rings 29 and 3l it will be noted with respect to the ring 29that the mouth 28 is of a size slightly less than the widest diameter of the pilot 25 at the area thereof engaged by said retainer ring can be snapped onto and from the pilot and when upon the pilot will be Irictionally held engaged thereon. In fact, the oppositeextremities of the mouth 28 are so formed that each is in the nature of a springy terminal lip 36 adapted to crowd against the pilot at the point of engagement of the retainer'ring therewith for thesecureholding of the retainer upon the pilot yet permitting the snapping oft of this retainer when it is required to renew a valve disk.

The pilot 25 is for replacement for valves now." in use to obtain the quick change eilect where a new stem is not necessary.

The valve disk ls a solid composition'to meet the condition for which it is to be used. Y The bore of the retainer is the same as the diameter of the bottom flange of the stem 3| and such retainer has more than lone-half of its ciraumie'rence present causingk aK springing action when pressed over the flange of the stem 3l and holds the retainer 34 securely in place. This retainer will not come of!l until sufllcient pressure 29' so that this retainer e ling the slot except is applied to remove it for thereplacement of a new disk 35 when the occasion requires.

The essentials of theinvention are in the making of the pilot and the retainer with a horseshoe shaped end for the snapping on and snapping oi! of these parts in andvirom place for use in a valve.

What is claimed is: A disk retainer for `spigots having a valve spindle .and a neck body, comprising a pilot of substantially square formation provided with a slot in its top and opening through one side for releasably.; accommodating `the spindle, and also having beveled corners fox-the accommodating of said pilot within the neck body and the guiding of said pilot on manipulation of the spindle, opposed flanges on the pilot at its top and overhangat its open side for interconand said spindle, an annular bottom of saidlpilot, a-disk necting the pilot flange formed on the registerlngwlth the said annular ilange, a retaining ring about the flange and disk and having a slot opening through one side thereof for the releasable engagement of said ring with the ilange `when the latter is inserted in the slot at the open side thereof, and flanges on the'ring and overhangingthe slot except at its open side and-interconnecting the ring and pilot.

l CARL J. FITZGERALD.- 

